Well look at me, "Mr Bag and Tag" missed something.

I'm usually so anal about this - putting everything in boxes and baggies with everything labeled and I found these parts in an unmarked zip lock today. I just know that when I put them in the bag I said to myself "This is so obvious I'll know what they are... no need to mark the bag" Yea, right!
Anyway
HERE they are... '51 half-ton. Any help is appreciated.
Um... I'll blast and paint them once I know what they are
